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D*AP4 VAP
Block Diagram
The above schematic shows the principal blocks of the D*AP4 VAP.
The core of the unit is the audio processor with 4 inputs, 4 outputs and a 2ch monitor output.
An AES I/O on the motherboard is provided for digital line operation. The respective connectors have relay
bypass for power fail operation. The bypass ciruit may be disabled by an internal jumper.
An interface slot is provided to carry optional 3G / HD / SD-SDI, AES I/O / MADI / DANTE or even analog
expansion modules. It allows for extremely flexible interfacing of the D*AP4 VAP, especially for video based
voice over applications. The above schematic shows a MADI interface installed.
On the rear righthand side is the location for an optional high end dual microphone pre amp with phantom
power or an alternative optional dual AES42 input module.
The sync. circuit can deal with all formats to integrate the D*AP4 VAP into digital facilities with a sample rate
from 44.1 to 96kHz. Other devices may be synchronized by the word clock output of the D*AP4 VAP.
The D*AP4 VAP has 8 balanced GPIs and 8 relay closure GPO contacts. This enables the user to simply
recall presets or call events, change device configurations and report general status information.
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